Fri, 12 Nov 1999 12:28:39 -0500
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> eduardo wrote:
> > Thank you James.
> > But it didn't work.
> > "James M. Corey" wrote:
> > >
> > > What about
> > > dd if=/dev/hda of=/dev/hdb
> > > ?? (I haven't ever needed to do this)
> Hmm, I *think* you should be able to clone a disk using dd, at least -- it works
> for floppies. But I'm pretty sure you would need to specify a block size and a
> count. There are a couple of other considerations, such as, both disks need to
> be of exactly the same size. Even if hdb > hda, you'll end up with an incorrect
> partition table.
> You certainly cannot do this if either disk is in use. In practice you'd need to
> boot from a floppy.
> I have successfully migrated linux systems with a program called Norton Ghost
> which runs on DOS.
> Another option is to make a tarball of the entire fs (starting from /), but that
> creates a copy of the contents of the filesystem, not the filesystem structure
> itself, nor the boot block and the partition table.
> Re. the solution with the cat command, I don't expect this to work: a disk is a
> block device, cat works on streams. Has anyone ever used this successfully???
> Campo Weijerman <firstname.lastname@example.org>
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And the disk have to be the same geometry (# heads, cylinders, etc.) for dd to
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